diff mbox series

[v2,09/14] fit_check_sign: Allow selecting the configuration to verify

Message ID 20200318174408.77473-10-sjg@chromium.org
State Accepted
Commit c3aa81e35cc53fcd825e89510cd648288e0b6b92
Headers show
Series vboot: Fix forged-configuration vulnerability | expand

Commit Message

Simon Glass March 18, 2020, 5:44 p.m. UTC 
This tool always verifies the default configuration. It is useful to be
able to verify a specific one. Add a command-line flag for this and plumb
the logic through.

Signed-off-by: Simon Glass <sjg at chromium.org>
---

Changes in v2: None

 tools/fdt_host.h       | 3 ++-
 tools/fit_check_sign.c | 8 ++++++--
 tools/image-host.c     | 6 ++++--
 3 files changed, 12 insertions(+), 5 deletions(-)
diff mbox series

Patch

diff --git a/tools/fdt_host.h b/tools/fdt_host.h
index 99b009b221..15c07c7a96 100644
--- a/tools/fdt_host.h
+++ b/tools/fdt_host.h
@@ -27,6 +27,7 @@ 
  */
 int fdt_remove_unused_strings(const void *old, void *new);
 
-int fit_check_sign(const void *working_fdt, const void *key);
+int fit_check_sign(const void *fit, const void *key,
+		   const char *fit_uname_config);
 
 #endif /* __FDT_HOST_H__ */
diff --git a/tools/fit_check_sign.c b/tools/fit_check_sign.c
index 4528743792..9375d5cf72 100644
--- a/tools/fit_check_sign.c
+++ b/tools/fit_check_sign.c
@@ -41,6 +41,7 @@  int main(int argc, char **argv)
 	void *fit_blob;
 	char *fdtfile = NULL;
 	char *keyfile = NULL;
+	char *config_name = NULL;
 	char cmdname[256];
 	int ret;
 	void *key_blob;
@@ -48,7 +49,7 @@  int main(int argc, char **argv)
 
 	strncpy(cmdname, *argv, sizeof(cmdname) - 1);
 	cmdname[sizeof(cmdname) - 1] = '\0';
-	while ((c = getopt(argc, argv, "f:k:")) != -1)
+	while ((c = getopt(argc, argv, "f:k:c:")) != -1)
 		switch (c) {
 		case 'f':
 			fdtfile = optarg;
@@ -56,6 +57,9 @@  int main(int argc, char **argv)
 		case 'k':
 			keyfile = optarg;
 			break;
+		case 'c':
+			config_name = optarg;
+			break;
 		default:
 			usage(cmdname);
 			break;
@@ -78,7 +82,7 @@  int main(int argc, char **argv)
 		return EXIT_FAILURE;
 
 	image_set_host_blob(key_blob);
-	ret = fit_check_sign(fit_blob, key_blob);
+	ret = fit_check_sign(fit_blob, key_blob, config_name);
 	if (!ret) {
 		ret = EXIT_SUCCESS;
 		fprintf(stderr, "Signature check OK\n");
diff --git a/tools/image-host.c b/tools/image-host.c
index b3ec197dc9..dfea48e894 100644
--- a/tools/image-host.c
+++ b/tools/image-host.c
@@ -1025,12 +1025,13 @@  int fit_add_verification_data(const char *keydir, void *keydest, void *fit,
 }
 
 #ifdef CONFIG_FIT_SIGNATURE
-int fit_check_sign(const void *fit, const void *key)
+int fit_check_sign(const void *fit, const void *key,
+		   const char *fit_uname_config)
 {
 	int cfg_noffset;
 	int ret;
 
-	cfg_noffset = fit_conf_get_node(fit, NULL);
+	cfg_noffset = fit_conf_get_node(fit, fit_uname_config);
 	if (!cfg_noffset)
 		return -1;
 
@@ -1039,6 +1040,7 @@  int fit_check_sign(const void *fit, const void *key)
 	ret = fit_config_verify(fit, cfg_noffset);
 	if (ret)
 		return ret;
+	printf("Verified OK, loading images\n");
 	ret = bootm_host_load_images(fit, cfg_noffset);
 
 	return ret;